Circuit device, display control system, electronic apparatus, and mobile unit for securing reliability of image data

Abstract

A circuit device 100 includes an interface circuit 160 that receives image data and information for image check and a processing circuit 105 that performs image check processing. The information for image check includes information for designating an image check method for a region to be subjected to image check and position information of the region to be subjected to image check. The processing circuit 105 performs the image check processing on the image data of the region to be subjected to image check specified by the position information, using the image check method designated by the designation information.

What is claimed is: 
     
       1. A circuit device comprising:
 an interface circuit that receives image data and information for image check associated with the image data; and 
 a processing circuit, which is in communication with the interface circuit, that performs image check processing on the image data received by the interface circuit and based on the information for image check associated with the image data received by the interface circuit, 
 wherein the information for image check includes: 
 information for designating an image check method for a region to be subjected to image check, the image check method being selected from one of a plurality of image check methods, and position information of the region to be subjected to image check, and 
 the processing circuit performs the image check processing on the image data of the region to be subjected to image check specified by the position information, using the image check method designated by the designation information, and 
 wherein the image check method is selected from the one of the plurality of image check methods in accordance with the region to be subjected to image check of the image data. 
 
     
     
       2. The circuit device according to  claim 1 ,
 wherein the interface circuit receives an expectation value of the image check processing after receiving the image data, and 
 the processing circuit performs the image check processing based on the expectation value. 
 
     
     
       3. The circuit device according to  claim 2 ,
 wherein the interface circuit receives storage region designation information for designating a storage region of the expectation value, as the information for image check, and 
 the processing circuit acquires the expectation value from the storage region designated by the storage region designation information. 
 
     
     
       4. The circuit device according to  claim 1 ,
 wherein the interface circuit receives an expectation value of the image check processing during a horizontal blanking period of the image data, and 
 the processing circuit performs the image check processing based on the expectation value. 
 
     
     
       5. The circuit device according to  claim 4 ,
 wherein the interface circuit receives fixed data as the expectation value, and 
 the processing circuit performs the image check processing by comparing the expectation value with comparison data corresponding to the fixed data. 
 
     
     
       6. The circuit device according  claim 1 ,
 wherein the image check method is ECC, CRC, checksum, or a fixed data method in which fixed data is used to perform the image check processing. 
 
     
     
       7. The circuit device according to  claim 1 ,
 wherein the information for image check includes: 
 information regarding a first image check method for a first region to be subjected to image check, first position information of the first region to be subjected to image check, information regarding a second image check method for a second region to be subjected to image check, and second position information of the second region to be subjected to image check, and 
 the processing circuit performs image check on the image data of the first region to be subjected to image check, using the first image check method, and performs image check on the image data of the second region to be subjected to image check, using the second image check method. 
 
     
     
       8. The circuit device according to  claim 7 ,
 wherein the first image check method and the second image check method are selected from the image check methods. 
 
     
     
       9. The circuit device according to  claim 7 ,
 wherein the first image check method is ECC, and 
 the second image check method is CRC or checksum. 
 
     
     
       10. The circuit device according to  claim 7 ,
 wherein the first image check method is CRC, and 
 the second image check method is checksum. 
 
     
     
       11. The circuit device according to  claim 1 ,
 wherein the interface circuit receives the image data of a display image that includes a first icon and a second icon, 
 the information for image check includes information regarding a first image check method for a first region to be subjected to image check corresponding to the first icon, first position information of the first region to be subjected to image check, information regarding a second image check method for a second region to be subjected to image check corresponding to the second icon, and second position information of the second region to be subjected to image check, and 
 the processing circuit performs image check on the image data of the first region to be subjected to image check, using the first image check method, and performs image check on the image data of the second region to be subjected to image check, using the second image check method. 
 
     
     
       12. A display control system comprising:
 the circuit device according to  claim 1 ; and 
 a processing device that transmits the information for image check and the image data to the circuit device. 
 
     
     
       13. An electronic apparatus comprising:
 the circuit device according to  claim 1 . 
 
     
     
       14. A mobile unit comprising:
 the circuit device according to  claim 1 . 
 
     
     
       15. The circuit device according to  claim 1 ,
 wherein the image check method is selected from the one of the plurality of image check methods in accordance with a degree of importance of the region to be subjected to image check of the image data. 
 
     
     
       16. A circuit device comprising:
 an interface circuit that receives image data and information for image check; and 
 a processing circuit that performs image check processing, 
 wherein the information for image check includes: 
 information for designating an image check method for a region to be subjected to image check and position information of the region to be subjected to image check, and 
 the processing circuit performs the image check processing on the image data of the region to be subjected to image check specified by the position information, using the image check method designated by the designation information, and 
 wherein the interface circuit receives an expectation value of the image check processing during a horizontal blanking period of the image data, and 
 the processing circuit performs the image check processing based on the expectation value. 
 
     
     
       17. The circuit device according to  claim 16 ,
 wherein the interface circuit receives fixed data as the expectation value, and 
 the processing circuit performs the image check processing by comparing the expectation value with comparison data corresponding to the fixed data.